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前盘后鼓制动系 飞度轿车制动系统的设计.doc

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前盘后鼓制动系 飞度轿车制动系统的设计.doc

摘要国内汽车市场迅速发展,然而随着汽车保有量的增加,带来的安全问题也越来越引起人们的注意,而制动系统则是汽车主动安全的重要系统之一。汽车制动系使行驶中的汽车减速或停车、使下坡行驶的汽车车速保持稳定以及使已停驶的汽车在原地包括在斜坡上驻留不动的机构。随着高速公路的迅速发展和车速的提高以及车流密度的日益增大,为了保证行车安全,汽车制动系的工作可靠性显得日益重要。也只有制动性能良好、制动系工作可靠的汽车,才能充分发挥其动力性能。本说明书主要介绍了飞度轿车制动系统的设计。首先介绍了汽车制动系统的结构、分类,并通过对鼓式制动器和盘式制动器的结构及优缺点进行分析。最终确定方案采用液压双回路前盘后鼓式制动器。关键词制动、盘式制动器、鼓式制动器、设计参数、制动性能ABSTRACTDomesticautomobilemarketdevelopingquickly,however,withtheincreaseoftheautopossession,bringsecurityismoreandmoreattention,andbrakesystemistheimportantcaractivesafetysystemone.Thebrakeisamovingcarslowdownorstop,makethedownhillcarsspeedstabilityandmakealreadyinplaceofthecartheyoffendincludinginslopestayfixedinstitution.Withtherapiddevelopmentofthehighwayspeedandtheimprovementoftrafficdensityandincreasesdaybyday,inordertoguaranteesafety,carbrakesystemreliabilityofworkappearincreasinglyimportant.Alsoonlybrakeperformanceisgood,brakesystemreliablecarandfullyplayitsdynamicperformancethismanualmainlyintroducesthedesignofthecarbrakesystemflyingacross.Firstthispaperreviewedtheautomobilebrakingsystemstructure,classification,andthroughtothedrumbrakediscbrakeandthestructureandtheadvantagesanddisadvantagesareanalyzed.Ultimatelydeterminetheschemeadoptshydraulicdoublecircuitwithdiskanddrumbrakesystem.Keywordsbrake、diskbrake、drumbrake、designparameters、brakingperformance、目录1绪论...........................................................................................................................11.1制动系统概述................................................................................................11.1.3制动系的作用及其组成...................................................................11.1.2制动系一般工作原理.......................................................................11.1.3制动系的类型...................................................................................21.1.4制动系的设计要求...........................................................................31.2制动系统研究现状及发展趋势....................................................................62制动系统方案论证分析与选择...............................................................................82.1制动器结构型式及选择................................................................................82.1.1盘式制动器.......................................................................................82.1.2鼓式制动器......................................................................................102.2制动驱动型式选择.......................................................................................142.2.1简单制动系.....................................................................................142.2.2动力制动系......................................................................................152.2.3伺服制动系......................................................................................152.3制动主缸型式...............................................................................................162.4制动管路型式选择........................................................................................172.4.1II型回路...........................................................................................182.4.2X型回路...........................................................................................182.4.3其他类型回路...................................................................................182.5制动系统布置型式.........................................................................................193制动系统主要参数及其设计计算............................................................................203.1参考车型制动系相关主要参数数值.............................................................203.2同步附着系数分析.........................................................................................203.3制动力及制动力分配系数..............................................................................213.4制动强度和附着系数利用率..........................................................................243.5制动器制动力及制动力矩的计算..................................................................253.6制动因数...........................................................................................................26II3.7前轮盘式制动器参数设计计算........................................................................273.8后轮鼓式制动器参数设计计算........................................................................283.9制动器磨损特性热容量及温升计算................................................................294制动器主要零部件的结构设计...................................................................................324.1盘式制动器主要零部件的结构设计................................................................344.1.1制动盘...................................................................................................344.1.2制动钳...................................................................................................344.1.3制动块...................................................................................................354.1.4摩擦材料...............................................................................................354.2鼓式制动器主要零部件的结构设计................................................................354.2.1制动鼓...................................................................................................354.2.2制动蹄...................................................................................................364.2.3制动底板...............................................................................................364.2.4制动蹄的支承.......................................................................................374.2.5制动轮缸...............................................................................................375液压制动驱动机构的设计计算.................................................................................385.1前轮盘式制动轮缸直径与工作容积设计计算................................................385.2后轮鼓式制动轮缸直径与工作容积设计计算................................................395.3制动主缸与工作容积设计计算........................................................................405.4制动踏板力与踏板行程....................................................................................416制动性能分析计算.......................................................................................................436.1制动性能评价及其分析....................................................................................436.2制动器制动力分配曲线分析............................................................................446.3制动减速度与制动距离的计算........................................................................446.4驻车制动计算......................................................................................................457结论...............................................................................................................................478致谢...............................................................................................................................489参考文献.......................................................................................................................4910附录.............................................................................................................................50

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